Twitter Search Results into Valid RSS feed

<?php
require_once('../../Muskie/codebird.php');
require_once('../../Muskie/myInfo.php');

header('Content-type:text/xml; charset=utf-8'); // You have to do this early to have a valid RSS feed

Codebird::setConsumerKey(myInfo::MY_TWITTER_PUBLIC_KEY, myInfo::MY_TWITTER_PRIVATE_KEY);
$cb = Codebird::getInstance();
$cb->setToken(myInfo::MY_TWITTER_ACCESS_TOKEN, myInfo::MY_TWITTER_ACCESS_TOKEN_SECRET);
$searchResults = null;
$searchTerm = null;

if(isset($_GET["q"]))
{
    $searchTerm = $_GET["q"]; // This should already be URL encoded I imagine, will have to test works for Vancouver
    $encodedQuery = urlencode( $searchTerm ); // Re-encoded just in case
    $params = array(
            'q' => $encodedQuery,
            'lang' => 'en',
            'result_type' => 'recent'
            );

    $searchResults = $cb->search_tweets($params);
}

// Begin the RSS Feed
echo '<?xml version="1.0" encoding="UTF-8" ?>';
?>

<rss version="0.91"> <!-- not sure if I should bother with RSS 2.0, simple is best IMHO -->
<channel>
<?php echo('<title>Twitter Search Result Feed for ' . $searchTerm . ' </title>'); ?>
<link>http://www.muschamp.ca</link>
<description>
Recent tweets for keyword search as an RSS feed.
</description>
<language>en-us</language>
<pubDate><?php echo date("D, d M Y H:i:s T"); ?></pubDate>

    <?php
    foreach($searchResults->statuses as $this_tweet)
    {
        print('<item>' . "\n");
        print('<title>' . htmlspecialchars($this_tweet->text, 16, "UTF-8") . '</title>'. "\n");
        print('<link>http://twitter.com/' . $this_tweet->user->screen_name . '/status/' . $this_tweet->id_str . '</link>' . "\n");
        print('<description>' . $this_tweet->text . '</description>'. "\n");
        $pubTime = strtotime($this_tweet->created_at);
        $pubDate = date("D, d M Y H:i:s T", $pubTime);
        print('<pubDate>' . $pubDate . '</pubDate>' . "\n");
        print('</item>'. "\n");
    }
    ?>

</channel>
</rss>